Inside [Klaus]’ device is an Arduino Uno, an HC-SR04 ultrasonic distance sensor, and an Adafruit Wave Shield. Originally, this parking/distance sensor used a small TFT to display the distance to ...

For [Jianjia Ma]’s QingStation, he decided to build another type of wind sensor: An ultrasonic anemometer. Ultrasonic anemometers have no moving parts but come at the cost of significantly more ...